A North Atlantic Treaty Organization spokeswoman blamed a "fly-on-the-wall documentary" as the source of Russian President Vladimir Putin's claim that Secretary-General Anders Fogh Rasmussen was using a Dictaphone while he was Danish prime minister to secretly record a meeting.

Mr. Putin levied the Dictaphone accusation against Mr. Rasmussen Thursday during a widely covered question and answer session, using it as an example of why NATO's chief couldn't be trusted. Oana Lungescu, a NATO spokeswoman, said...